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Finding the Fourth Proportional to 430.24, 593.64 and 280.96

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Solution

The fourth proportional to 430.24, 593.64 and 280.96 is: 387.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    430.24 : 593.64 = 280.96 : x
  2. Step 2: Convert to fraction form
    430.24/593.64 = 280.96/x
  3. Step 3: Cross multiply
    430.24x = 593.64 × 280.96
  4. Step 4: Simplify right side
    430.24x = 166,789.09
  5. Step 5: Solve for x
    x = 166,789.09/430.24
  6. Step 6: Final answer
    x = 387.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.